Green synthesis of mesoporous carbon supported (Ni)MoS2 as efficient hydrodesulfurization catalyst

被引：0
|
作者：
Liang J.-L. [1 ]
Wu W.-J. [1 ]
Wu M.-M. [1 ]
Hua J.-W. [1 ]
Liu Y.-Q. [2 ]
Liu C.-G. [2 ]
机构：
[1] College of Pharmacy and Chemistry & Chemical Engineering, Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, Taizhou University, Taizhou
[2] State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao
来源：
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2023年 / 51卷
基金：
中国国家自然科学基金;
关键词：
freeze-drying; hydrodesulfurization; mesoporous carbon; polyoxometalate; salt template;
D O I：
10.19906/j.cnki.JFCT.2023033
中图分类号：
学科分类号：
摘要：
Mesoporous carbon supported Ni-Mo hydrodesulfurization (HDS) catalysts have been successfully prepared with Anderson polyoxometalate (NH4)4[NiMo6O24 H6]·5H2O, thiourea, citric acid, and sodium chloride to evaluate the HDS performance with dibenzothiophene. The catalysts were prepared by one-step vacuum freeze-drying, followed by calcination under nitrogen and washing off the template, and then structurally characterized via many devices, including XRD, Raman, low temperature N2 adsorption-desorption isotherm, SEM, HRTEM, XPS, and TPR. The results show these catalysts possess weaker metal-support interaction, shorter MoS2 particles (4.9 nm) and appropriate stacking number (4.8), and higher percent of NiMoS active phase. The dibenzothiophene conversion, overall pseudo-first order rate constant and the turnover frequency can reach 94.1%, 1.7 × 10–6 mol/(g·s) and 2.8 × 10–3 s–1, respectively. By using in-situ formed NaCl and H2S as hard template and sulfidizing agent respectively, this methodology opens a new avenue for the simple and environmental friendly fabrication of HDS catalysts via the synchronization and riveting of mesoporous carbon support and MoS2 particles. © 2023 Science Press. All rights reserved.
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页码：1761 / 1771
页数：10
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